Machine for coating labels, etc., with adhesive or a similar substance



Aug. 23, 1927. 4 19 F. R. SCHMITT MACHINE FOR COATING LABELS, 121 0., WITH ADHESIVE OR A SIMILAR SUBSTANCE Filed Sept. 27. 1924 2 Sheets-Sheet l awuemtoz 1927' F. R. SCHMITT MACHINE FOR COATING LABELS, ETC., WITH ADHESIVE OR A SIMILAR SUBSTANCE Filed Sept. 27. 1924 2 SheetB-ShOOQ 2 awuembo'c Patented Aug. 23, 1927.

UNITED STATES FRANK n. scnivrrrr,

1,640,219 PATENT OFFICE.

or NEW YORK, N. Y.

MACHINE FOR COATING LABELS, ETQ, VfITI-I ADHESIVE OR A SIMILAR SUBSTANCE.

Application filed September 27, 1924. Serial No. 740,219.

This invention relates to improvements to a machine for applying a coating of ad hesive or similar substance to one side of a label or material of uniform or varying thickness; and the objects of my improvement are:

First; to provide a simply constructed and efiiciently operated machine having automatic compensating means to allow any thickness of paper or like material to be inserted between feed rollers;

Second; to provide automatic adjustment between feed rollers and the adhesive applying roll;

Third; to afford facilities for removing feed roll or rollers without disturbing the coating regulating means.

I attain these objects by the mechanism illustrated in the accompanying drawing, in which-- Figure 1, is a plan View of a machine embodying my invention with certain parts broken away.

Figure 2, is a front elevation with tain parts broken away.

Figure 3, is an enlarged view of the feed rollers and their bearings showing the manner in which the label is presented to the coating roller.

In the construction of my invention, .a pair of side frames 1, 1, held rigidly together by tie-rods 2 and 3, and also by stripper finger bar 4, constitute the frame work of the machine. Liquid holding receptacle 5, is provided with three downwardly projecting lugs 6, whereby said receptacle is locked between the frames 1, 1, by removable bar 7, and being held in proper position by grooves 8, cut into fixed tie rod 3, and removable bar 7.

Rotatably mounted between the frames 1, 1, and partly within the liquid holding re-' ceptacle 5, is the coating roller provided with trunnions, one trunnion having a gear 10, inside of frames 1, 1; pulley 11, on the opposite trunnion out-side of frames 1, 1, is used as aimeans for rotating the roll. Studs 12, are held in frames 1, 1, by thumbscrews 13. Pivotally mounted on the studs are lower arms 14, and upper arms 15, holding feed rollers 16, and 17. Roll 16, has gear 18, meshing with gear 10, and adjacent to gear 18, is smaller gear 19, meshing with corresponding gear 20, on roller 17. 'Gears 18, and 10, are, however, so proportioned that the peripherical speed of the feed rollers 16 and 17, is less than the speed of coating roller 9; extending through a projection on arms 14, are thumb-screws 21, with lock nuts 22, one end of the thumbscrews abutting against frame 1, 1, at the lower extremity of the arm rotatably mounted is a doctor roller 23, carrying gear 24. meshing with gear 10.

Suspended from the projection on arm 14.. a spring 25, anchored to tie-rod 3. Held to frames 1, 1, by screws 26, is a plate acting as a feed table 27. Fastened to the top of the table by screw 32, is a flat spring 28, one end bearing againstupper arm 15. A projection 29, on arm 15, retains the feed rolls within the bearings. Mounted on bar 4, are stripper fingers 30, and their holders 31, which strip the articles 33, from the roller 9. In the arm 14, is a recess 34, act ing as the lower half of a bearing and in the arm 15, is a recess actingv a the upper half of a bearing forfeed rollers 16 and 17. (See Figure 3).

The operation of the machine and the relative functions of the parts-Will be readily apparent from the foregoing description and may be summed up briefly: The article 33, to be coated is placed on feed table 27 fed between rollers 16 and 17, said rollers being driven from gear 10, through gears 18 and 19, to gear 20. Said drive causing a positive rotation of feed rollers. As the material passes twixt the rollers 16 and 17, the center distance between the rollers is increased automatically an amount equal to the thickness of the article to be gummed; to enable the top roller 16, to compensate automatically for the varying thickness of the materials and still retain the object under feeding pressure, I show a projection 29, on the arm 15, presenting a surface at an angle to the journal of the roller, causing the arm to rise against the resistance of the flat spring 28.

By revolving the screws 21, in lower arms 14, in a clockwise direction, the doctor roller 23, recedes from coating roller 9, thereby increasing the thickness of the coating on the roll. As the film ofcoating is increased or diminished the feed rollers 16 and 17, automatically recede from or advance towards the coating roll in proportion to the distance that feed rollers 16 and 17, and the doctor roller 23, are spaced from the fulcrum stud 12. v

In Figure 2, upper arm 15 is shown dotted in a position to permit the removal of feed rollers 16 and 17, without disturbing the setting of doctor roller 23.

For cleaning the machine remove feed table 27, unhook springs 25, unloosen thumb screw 13, and the front part of machine may be lifted out of slots, as a unit, and by withdrawing removable bar 7, the liquid container 5, may be removed; thereby exposing coating roller 9, for cleaning. (See Figure 1) Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States, isi

1. In a machine for coating labels with adhesive the combination of an adhesive applying r oll, label feed rollers, an upper and lower arm, pivotally mounted, having corresponding recesses, acting as the upper and lower halves of a bearing for said :t'eed rollers, and means for adjusting said arms, relatively to the adhesive applying roll.

2. In a machine for coating labels with adhesive, thecombination o'f an adhesive applying roll, label feed rollers, an upper and lower arm pivotally mounted, having corresponding recesses, acting respectively as the upper and lower halves of a bearing for said feed rollers, one of the halves of the bearing having a projection for confining the feed rollers within the bearing and means for adjusting said arms relatively to the adhesive applying roll.

3. In a machine for coating labels with adhesive, the combination of an adhesive applying roll, label feed rollers, an adhesive regulating means, an upper and lower arm pivotally mounted, said arms having corresponding recesses, acting respectively as the upper and lower halves of a bearing for the label feed rollers, the arms having a projection for confining the rollers within the bearing and including a support in said arms for an adhesive regulating means, and means for adjusting said arms, the label feed roll ers, and the adhesive regulating means in relation to the adhesive applying roll.

4-. In a machine for coating labels with adhesive, the combination of an adhesive applying roll, label "feed rollers, an adhesive regulating means, arms pivotally mounted, having means for holding the feed rollers and adhesive regulating means, and means for simultaneously adjusting the label feed rollers, and adhesive regulating means in relation to the adhesive applying roll.

5. In a machine for coating label's with adhesive, the combination of side frames, an adhesive container, an adhesive applying roll, an adhesive regulating means, label feed rollers split bearings consisting of upper and lower members having recesses for the label feed rollers, both the upper and lower members pivoted about the same point and adapted to permit the removal of the label feed rollers without disturbing the setting of the adhesive regulating means.

FRAI'IK it. SOHBHTT. 

